A centre pivot liner

Abstract

A centre pivot liner ( 10 ) which includes a body ( 12 ), and a bearing formation ( 14 ) mountable about the body ( 12 ) for in use, defining a bearing surface ( 16 ) of the centre pivot liner ( 10 ) and wherein the bearing formation (14) has a coefficient of friction value less than that of the body ( 12 ).

1 . A centre pivot liner which includes
 a body;   a receiving formation defined about the body for receiving a bearing formation therein;   the bearing formation in use, defining a bearing surface of the centre pivot liner;   wherein the bearing formation has a coefficient of friction value less than that of the body.   
     
     
         2 . (canceled) 
     
     
         3 . A centre pivot liner as claimed in  claim 1  wherein the body includes elongate grooves arranged in a spaced apart manner and radiating away from a central region of the body. 
     
     
         4 . A centre pivot liner as claimed in  claim 2  wherein the body includes a flange extending circumferentially about and upwardly away from the body. 
     
     
         5 . A centre pivot liner as claimed in  claim 33  wherein the bearing formation has a coefficient of friction value less than that of the flange. 
     
     
         6 - 8 . (canceled) 
     
     
         9 . A centre pivot liner as claimed in  claim 1  wherein the receiving formation includes one or more recesses. 
     
     
         10 . A centre pivot liner as claimed in  claim 1  wherein the receiving formation includes one or more apertures. 
     
     
         11 - 14 . (canceled) 
     
     
         15 . A centre pivot liner as claimed in  claim 1  wherein the bearing formation has a thickness dimension such that when located in the receiving formation, the bearing formation protrudes about an inner and/or outer facing surface of the body. 
     
     
         16 . (canceled) 
     
     
         17 . A centre pivot liner as claimed in  claim 1  wherein the bearing formation has a thickness dimension such that when located in the receiving formation, the bearing formation is flush with an inner and/or outer facing surface of the body. 
     
     
         18 - 19 . (canceled) 
     
     
         20 . A centre pivot liner as claimed in  claim 1  wherein the bearing formation is shaped and sized for, in use, fit into the receiving formation in a friction fit manner. 
     
     
         21 . A centre pivot liner as claimed in  claim 1  wherein the receiving formation and bearing formation are distinctively dimensioned so as to define a retaining arrangement therebetween for, in use, retaining the bearing formation in the receiving formation in a fixed manner. 
     
     
         22 . A centre pivot liner as claimed in  claim 1  wherein the receiving formation and bearing formation are distinctively dimensioned so as to define a retaining arrangement therebetween for, in use, releasably retaining the bearing formation in the receiving formation. 
     
     
         23 - 26 . (canceled) 
     
     
         27 . A centre pivot liner as claimed in  claim 1  wherein the bearing formation has a maximum coefficient of friction value of less than about 0.2. 
     
     
         28 - 32 . (canceled) 
     
     
         33 . A centre pivot liner as claimed in  claim 4  wherein the receiving formation is arranged about the flange for receiving the bearing formation therein. 
     
     
         34 . A centre pivot liner as claimed in  claim 33  wherein the receiving formation includes one or more recesses. 
     
     
         35 . A centre pivot liner as claimed in  claim 33  wherein the receiving formation includes one or more apertures. 
     
     
         36 . A centre pivot liner as claimed in  claim 5  wherein the bearing formation has a thickness dimension such that when located in the receiving formation, the bearing formation protrudes about an inner and/or outer facing surface of the flange. 
     
     
         37 . A centre pivot liner as claimed in  claim 5  wherein the bearing formation has a thickness dimension such that when located in the receiving formation, the bearing formation is flush with an inner and/or outer facing surface of the flange. 
     
     
         38 . A centre pivot liner as claimed in  claim 5  wherein the bearing formation is shaped and sized for, in use, fit into the receiving formation in a friction fit manner. 
     
     
         39 . A centre pivot liner as claimed in  claim 5  wherein the receiving formation and bearing formation are distinctively dimensioned so as to define a retaining arrangement thereinbetween for, in use, retaining the bearing formation in the receiving formation in a fixed manner. 
     
     
         40 . A centre pivot liner as claimed in  claim 5  wherein the receiving formation and bearing formation are distinctively dimensioned so as to define a retaining arrangement thereinbetween for, in use, releasably retaining the bearing formation in the receiving formation. 
     
     
         41 . A centre pivot liner as claimed in  claim 5  wherein the bearing formation has a maximum coefficient of friction value of less than about 0.2.